Vacuum sealing machine for bottles, jars, cans, and the like



Nov. 7,

Filed Sept. 30, 1932 F. O. L. CHORLTON VACUUM SEALING MACHINE FORBOTTLES, JARS,

, AND THE LIKE 2*Sheets-Sheet l JAM/z @M 2; m

fi ww Nov. 7, 1933. O CHORLTON 1,934,258

VACUUM SEALING MACHINE FOR BOTTLES, JARS, CANS, AND THE LIKE Filed Sept.30, 1932 2 Sheets-Sheet 2 Patented Nov. 7, 1933 UNITED, STATES" VACUUMSEALING MACHINE FOR BOTTLES, JARS, CANS, AND THE LIKE Frank Oscar LeviChorlton, Bury, England Application September 30, 1932, Serial No.635,630. and in Great Britain ct0ber'16, 1931 3 Claims. (01. 226-82)Improvements relating to vacuum sealing machines for bottles, jars, cansand the like.

The invention relates to machines employed for the sealing of bottles,cans or other'like vessels, under a vacuum or partial vacuum, in asealing chamber and known as vacuum sealing machines.

As the heights of the vessels operated upon in practice vary,adjustments are necessary in distances and movements of parts involvedrelatively to what iscalled the sealing chamber.

The invention relates to that type of vacuum machine in which a tablebelow the sealing chamber named is provided upon which the vessel to besealed is placed. This table is capable of an up and-down movementwithin an outer cylinder termed an antechamber, or sealing cylinder, thelatter being capable of sliding within an outer support. The supportreferred to may .be clamped or attached to the framing of the machine inan adjustable manner, and this support may be conveniently termed atable-bracket as a consequence.

The object of the invention is to provide means whereby the lift of thesealing cylinder is automatically adjusted with the adjustment of thetable bracket below the sealing chamber.

For this purpose, I provide mechanism in connection with the sealingcylinder named and the table-bracket, operating through leverage of avariable nature; that is to say, said mechanism has motion given to itfrom asuitably moving part, which motion transmitted to the sealingcylinder varies according to the height at which the table bracket isclamped, which is determined by the height or" the vessel to be operatedupon.

With reference to the accompanying drawings, Fig. 1 is a sectionalelevation of a portion of a vacuum sealing machine adopted according toone form of my present invention. Fig. 2 is a similar view, but showingthe disposition of parts when a vessel having a different height to theone previously provided for is accommodated. Fig. 3 shows a detailrelative to the foregoing figures. Fig. 4 shows parts of Fig. 2, with anadditional detail therein. Fig. 5 shows in elevation, and on a reducedscale, the main parts of a vacuum sealing machine arranged according tomy invention. Fig. 6 is a sectional plan of a portion or detail in Figs.1 and 2.

According to my invention, a multi-legged de-,

vice or bellcrank lever l is shown pivoted at 2 to the table-bracket 3,the latter being clamped to the machine framing at 4. In Fig. 4 themeans whereby the table-bracket is so clamped is indicated. That is tosay, studs lx are passed through a slot 3x in said bracket for thepurpose in manner well understood,

. One arm of the bell-crank lever. 1 is shown connectedto the sealingcylinder 5 by means of a connecting link (or links) 6; The latter.passes through a slot 63 in the table-bracket3.

V The other arm 01" said lever device 1 is shown being impinged againstby a bowl '7 revolubly mounted on a rod or member 8 sliding in bear- 65ings on the frame l, and capable of a longitudinal movement due to acontacting cam 9 receiving motion from a revolving shaft 10, the latterrbeing driven by horizontal shaft 10X (Fig. 5), s the two shafts beingcapable of being geared to- 7 gether for the purpose. A fast pulley 10yfor belt driving of shaft 10X is attached to the latter.

A pivot or axis for the bell-crank lever l is here provided by a pin 2having an eccentric H part 2X, and supported by a boss in connectionwith the table brackets. That is to say, and referring to Fig. 6, thethicker or eccentric part 2x of the pin ends 2 is normally fixed inposition by means of the pinch screws 14 in manner indicated, but whenit is desired to adjust the lever 1 relatively to its mount or pin-part2X, the pinch screws are temporarily released. The whole of the pin 2,2x, may then be rotated to a desirable extent in the bracket 3, and thesaid screws 14 tightened again. The purpose of the eccentricallyadjustable pivot for the lever l is to provide a means of adjusting to alimited extent the travel or lift of the sealing cylinder 5 toensure'that it makes an air-tight joint on the underside of I g thesealing chamber 11.

It will be seen from Fig. 1 that when the table bracket 3 has beenclamped at the correct height relatively to the sealing chamber shown at11 (and between which chamber and a table at 12 the vessel 13 issituated) the movable rod 8 is capable of pushing the adjacent arm ofthe bell-crank 1 to an extent suitable for raising the sealing cylinder5 until its upper edge makes contact with the underside of the chamber11 in an gm air-tight manner, as requisite. The movement of 1 the table12 is provided for according to known means. That isto say, andreferring to Fig. 5, a spindle 12X connected to the table 12, isimpinged against by a two-armed lever 15 oper- Q ated by a slidable pushrod 16, the latter actuated by a cam 17, attached to shaft 10 aforesaid.It will be evident that if the spindle 12x is made v adjustable inlength in any well known manner,

then said spindle may be adapted to difierent po- The vessel shown inFig. l is of a different height from the vessel 13' shown in Fig. 2, theaccommodating of the latter necessitating the lowering of the tablebracket 3 relatively to the framing 4, and sealing chamber 11. But itwill be seen that said downward movement of the bracket namedautomatically brings the bowl '7 of push rod 8 at a higher level on theadjacent arm of device 1, which means that the leverage is vanied or theeffective length of the right-hand lever-leg relatively to the lever legconnected, to link 6 is so adjusted that the greater movement ofantechamber 5 now required is thus provided for.

In this manner is the movement of the sealing cylinder 5 adjusted asrequired.

I claim:

1. For a vacuum sealing machine for sealing bottles, jars, cans and thelike, a table bracket adjustably attachable to the machine framing, amovable sealing cylinder slidably mounted in said table bracket, amulti-legged lever device pivoted on said table bracket, a leg of saidlever device connected to said sealing cylinder and whereby the latteris moved, a reciprocally movable member mounted in bearings in saidmaadjustably attachable to the machine framing, a movable sealingcylinder slidably mounted in said table bracket, a bell-crank leverpivoted on said table bracket, a leg of said bell-crank lever connectedto said sealing cylinder and whereby the latter is moved, a reciprocallymovable pushrod mounted in bearings in said machine frame, for movingsaid bell-crank lever about its pivot, a second leg of said bell-cranklever in contact with said push-rod, and so that the distance be- .tweensaid contact and the pivot of the bellcrank lever automatically varieswhen the position of the, table bracket is changed on the machine frame,for the purpose and as herein set forth.

3. For a vacuum sealing machine, for sealing bottles, jars, cans and thelike, a table-bracket adjustably attachable to the machine framing, amovable sealing cylinder slidably mounted in said table bracket, abell-crank lever pivoted on said table-bracket, a leg of said bell-cranklever connected to said sealing cylinder and whereby the latter ismoved, a reciprocally movable pushrod mounted in bearings in saidmachine framing for moving said bell-crank lever about its pivot,

a second leg of said bell-crank lever in contact with said push-rod, andso that the distance between said contact and the pivot of the bellcranklever automatically varies when the position of the table-bracket is'changed on the machine framing aforesaid, driven mechanism in connectionwith said push-rod and for operating the same, all for the purpose andas herein set forth.

FRANK OSCAR LEVI CHORLTON.

